I should have mentioned that I am quite fussy with regard to chainline.
I live in the foothills, and prefer to be able to smoothly use the full range of rear cogs while staying on the big ring as much as possible, so my bias is always for a shortest-possible chainline!
The issue became more of an issue when compact cranks (with their 16t gearing gap) arrived, and the issue is also more of an issue when using DT shift levers.

As I said though, for more of an in-town ride, a longer chainline is less of an issue since the rider will be dropping to the small ring often or may stay there.

Also, some gruppos designed around possible oversized seat tubes and/or triple cranks really have on over-generous chainline, because the component group was firstly designed to work with all the worst-case situations of achieving a robust shift to the small ring. But for bikes with 26.8mm standard steel seat tubes, the chainline usually tends to be greater than it should and needs to be for robust (front) downshifting and smoothest chain movement.